OmniClass Table 23: Products

OmniClass Table 23 classifies construction products—the materials, equipment, and manufactured items installed in buildings, organized by product type and function. Learn how Table 23 provides lifecycle classification, connects to MasterFormat and UniFormat, and how The Construction Standard provides licensed access to authoritative OmniClass data through CSI Dynamic Standards.

OmniClass Table 23 – Products provides lifecycle classification that spans design, construction, and operations. As part of CSI's comprehensive classification system, Table 23 delivers the taxonomy that BIM models, FM systems, and construction platforms need to organize products data authoritatively.

What Table 23 Classifies

OmniClass Table 23 classifies construction products—the materials, equipment, and manufactured items installed in buildings, organized by product type and function.

This table classifies products such as concrete products, masonry products, metal products, wood products, insulation products, roofing products, door and window products, finish products, equipment, and MEP components.

Table 23 contains a detailed, consensus-based taxonomy that organizes this scope into categories and subcategories professionals can apply across projects. These classifications provide a shared vocabulary across the construction lifecycle. When teams apply Table 23 classifications consistently, data flows cleanly from design through construction into decades of facility operations.

Licensed through The Construction Standard, CSI Dynamic Standards includes the authoritative, always-current Table 23 classifications—searchable, cross-referenced to MasterFormat and UniFormat, and edition-aware.

The Lifecycle Role of Table 23

Table 23 product classification applies from specification through procurement, installation, warranty, and replacement—providing the product-level data layer that connects submittals, O&M manuals, and spare parts inventories.

Who Uses Table 23

  • Manufacturers classifying their product catalogs
  • Specifiers selecting products for specifications
  • BIM library managers organizing product data
  • Procurement teams sourcing and comparing products

Whether you tag BIM models, manage building assets, build construction software, or organize project data, Table 23 provides the authoritative classification that keeps your work consistent with the broader industry.

How Table 23 Connects to Other Standards

MasterFormat

Table 23 products are specified within MasterFormat sections—concrete products (Table 23) appear in Division 03 specifications; HVAC equipment in Division 23 specifications.

UniFormat

Table 23 products compose UniFormat elements—a roofing assembly (UniFormat B30) uses membrane products, insulation products, and flashing products classified in Table 23.

These connections are maintained by CSI through governed relationships—not assembled ad hoc by individual project teams. Through The Construction Standard, licensed access to CSI Dynamic Standards gives teams these crosswalks so they can navigate between lifecycle categories, building elements, and specification sections without manual remapping.

Why OmniClass Matters for Long-Term Value

Buildings operate for decades. The classification applied during design and construction must carry into operations, maintenance, and capital renewal. OmniClass Table 23 provides the lifecycle layer that connects design-phase decisions to operations-phase reality—ensuring that structured data doesn't lose its value at handover.

Without authoritative lifecycle classification, FM teams rebuild taxonomy from scratch. Equipment histories lose their connection to original specifications. Capital renewal budgets lack the structured data needed for systematic planning. OmniClass Table 23 prevents these disconnects by providing classification that was designed to span the full lifecycle.

The Licensing Relationship

CSI—the Construction Specifications Institute—stewards OmniClass Table 23 as part of the OmniClass standard. CSI Dynamic Standards includes MasterFormat, UniFormat, and OmniClass as a connected, edition-aware system. The Construction Standard provides licensed access to CSI Dynamic Standards:

  • Always current: Classifications reflect the latest CSI-approved updates
  • Edition-aware: Teams know which edition applies and what changed between releases
  • Cross-referenced: Governed relationships to MasterFormat and UniFormat stay maintained
  • Integration-ready: Enterprise solutions carry Table 23 data into the tools you already use
COMMON QUESTIONS
Table 23 classifies this table classifies products such as concrete products, masonry products, metal products, wood products, insulation products, roofing products, door and window products, finish products, equipment, and MEP components. It provides the lifecycle taxonomy that connects design, construction, and operations data across the built environment.
Table 23 products are specified within MasterFormat sections—concrete products (Table 23) appear in Division 03 specifications; HVAC equipment in Division 23 specifications. Table 23 products compose UniFormat elements—a roofing assembly (UniFormat B30) uses membrane products, insulation products, and flashing products classified in Table 23. CSI Dynamic Standards includes these governed relationships—licensed through The Construction Standard—so teams can navigate between OmniClass lifecycle categories, MasterFormat specification sections, and UniFormat building elements.
Manufacturers classifying their product catalogs, Specifiers selecting products for specifications, BIM library managers organizing product data, Procurement teams sourcing and comparing products—anyone who classifies, tags, organizes, or builds software that references products data needs authoritative Table 23 classifications that stay current with consensus-based updates.
If your organization uses Table 23 classifications in BIM models, software platforms, databases, or deliverables that others rely on, CSI Standards licensing is necessary. The license ensures you're working with authoritative, CSI-approved classifications that stay current and maintain governed relationships to MasterFormat and UniFormat.

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CSI Dynamic Standards includes MasterFormat, UniFormat, and OmniClass as a connected, edition-aware system. The Construction Standard provides licensed access—built for the speed of your work.

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